US1614486A - Beating engine - Google Patents

Description

Jan. 18, 1927. 514,48?

J. T. MURPHY ET AL BEATING ENGINE Filed Sept. 11, 1920 '5 sheets-sh k'elt 1 Jan. 18, 1927. 1,614,486

J. T. MURPHY ET AL BEATING ENGINE 7 .File p 11. 1920 5 Sheets-Sheet 2 ED672775: Jmw ZYfarp/zy EdwazzzJ/Pmey Jan 18, 1927. 1,614,486

J. T. MURPHY ET AL BEATING ENGINE Filed Sept. 11 1920 5 Sheets-Sheet 4 Jan. 18, 1927.

J. T. MURPHY ET AL BEAIINGENGINE Filed Se P 11 1920 5 Sheets-Sheet dwardfianeg Patented Jan. "18, 1927.

UNITED TATE PATENT. forties.

JAMES T. MURPHY AND EDWARD J. RANEY OF CHICAGO, ILLINOIS, ASSIGNORS, BY

MESNE ASSIGNMENTS, OF ONE-THIRD TO CHICAGO MILL AND LUMBER COMPANY,

OF. CHICAGO, ILLINOIS,'A CORPORATION OF ILLINOIS.

BEATING ENGINE, w

Application filed September Our invention relates to improvements in beating engines, for the manufacture of paper pulp, and is especially concerned with the productionof a novel type of beating 5 engine by means of which a considerably largeroutput of paper pulp can be obtained than by the use of the beating engines now commonly employed in the paper industry.

Further objects of our invention are:

l First: To provide a beating engine comprising a plurality of beater rolls arranged in series, the beater rolls being 'so adjusted relative to their respective bed plates that the paper stock is reduced to a finer state of sub-division as it passes beneath successive beater rolls.

Second: To provide a beating engine of the character described-comprising means positioned in advance of the initial beater roll and preferably in advance of each beater roll, for removing the formed stock from the surface of the .water circulating in the beating engine. H

Third: To provide a beating engine of the character described to which the paper stock can be continuously supplied and the formed paper stock continuously removed.

Fourth: To provide an improved and novel means for continuously removing the formed paper stock from the beating engine.

Fifth: To provide novel means for raising and lowering and for driving the means for continuously removing the stock from the beating engine.

Sixth: To provide a beating engine comprising novel means for softening the paper stock before it passes through, the initial or breaker roll, this means further serving to direct and feed the paper stock beneath the initial beater roll.

Seventh: To provide a beating engine comprising a beater roll and a bed plate therefor, which coact in a novel manner to keep the blades of the. beater roll in a sharpened condition and Eighth: To provide a novel bed plate for the beater roll of a beating engine,

Further objects will appear as this description progresses, reference being had 'to 50 the accompanying drawings, in which- Figure 1 is a plan view of our improved beating engine;

Figure '2 1s a SldBGlGVfitlOIl, partly in cen tral longitudinal section, portions .of the 11, 1920. Serial 110. 409,551.

Figure 5 is an enlarged sectional detail taken on the line 55, Figure 2;

Figure 6 is a side elevation of our improved beating engine, portions thereofbeing brokenaway, showing part of the means which we employ for raising an lowering the means'for removing pulp from the beating engine; I

Figure 7 is an-enlarged sectional detail showing details of construction of the beater r015 and our improved bed plate therefor; an

Figure 8 is an enlarged sectional detail taken on the line 88, of Figure 7.

Throughout the several views, similar reference characters will be used for referring to similar parts. Referring for the present to Figures 1 and 2, the reference character 10 indicates the wall of the tank of our improved beating engine, which is divided longitudinally by the midboard 11 to form a circuitous path for the water and paper pulp in theusual manner. Fillets12 are provided at the corners formed by the lower edge of the sides 10 and the bottom 13 of the tank, to properly direct the paper stock as it flows through the tank. Adjacent to one end of the tank, we provide an initial beater roll 14 which will hereinafter, for the sake of convenience, be designated as a breaker roll and which is mounted upon a shaft 15,

journaled in bearings 16 which are in turn mounted upon the adjusting levers 17 The levers 17 are pivoted at 18 and the opposite ends thereof are provided with two screws 19, operable bythe hand wheels 20. The

lower ends of the screws 19 bear upon the edestals 21. By means of the construction ust described, the breaker roll can be raised and lowered merely by turning the hand wheels 20 in opposite directions. -The breaker roll is operated preferably by an steel bars 30, which are held in spaced relaother materiahhaving the property of exelectric motor, which is shown connected .We have also discovered that a better grindwith the shaft 15 by means of the belt 22 ing action is obtalned 1f the strips 31 are and belt pulley 23. A cover 24 may be pro vided forthe breaker roll 14. At the 0pposite end of the beating engine, and on the opposite side of the midboard, we provide a second beater roll 25, the function of which is to grind the paper stock which is initially disintegrated b the breaker roll The heater roll 25 is a aptably mounted inthe same -manner as the breaker roll 14, and can be driven in the same..manner. Further description of its mountings and the means for driving it will, therefore, be omitted.

It will be noted from inspection of Fig ure 2, that the breaker roll is provided with a pluralit of blades which extend longatudinally o the roll in the well known manner, and that the edges of these blades are u spaced a very substantial distance from the qulred for driving the beater'roll. r bed plate 26 which is formed by extending After the sto k passes beneath the beate the bottom of the tank upwardly and pro-' roll, the, greater vportion thereof is in conviding it with a cylindrical depression d1t1on to be removed from the engine and roughly conforming to the periphery of the for this purpose we have provided a means breaker roll. a which, for the present, will be indicated by By reference to Figures 7 and-8, it will the reference character C, which is so conbe seen that the construction of the beater structed as to continuously remove the roll 25 difi'ers materially from the construc formed pulp from the beating engine. This tion of the'breaker roll, in that it comprises apparatus is st) constructed that it selectably a larger number of blades 27, which are transversely corrugated. The blades are held in place by means of a plurality of wooden strips 28, inserted between the adjacent blades in a wellvknown manner. It will of course, be understood that the endsof the blades 27 are secured by means of metal bands in a manner well known to those skilled in this art.

Our improved bed plate for the beater roll comprises. a plurality of thin straight upper edges of these bars project freely beyond the upper edges of the spacing strips. Y

We prefer to make the tank of our im; proved beating engine considerably longer thanthe tanks of the beating engines at present in use, so that a comparatively long interval of time will ensue between the passage of the paper stock beneath the breaker roll and its subsequent passage between the beater roll 25' and its bed plate. In this manner, the paper stock remains in contact with the *water a sufficient length of time to very considerably soften it prior to its passage between the beater roll and its bed plate, thereby insuring a uniform product and decreasing the amount of power recoarser material, which passes along the tank with the current of water produced by the beater roll, and, for the second time new paper stock which is being continuously fed to the beating'en'gine.

Between the removing apparatus C and the grinderroll' there is a separation of completely formed paper pulp from the heavier particles of pulp and paper stock, and for preventing this ..comp etcly formed stock from again passing beneat the beater roll and thus lessening its capacity, we provide a second apparatus C for continuously removing paper pulp from the engine which is tion by means of thin strips 31 of wood or pandin'g by the absorption of water. The bars 30 and the strips 31 are held in assembled relation by means ofthe side bars 32, and the bolts 33. The ensemble thus formed is secured in a trough-"shaped container 34 of cast iron or other suitable material, molded into the bottom of the tank, by means of strips 35 of wood'or other material which expands when saturated with'water.

In use, the heatcrroll 25 is adjusted downrolls. 1 c e v a We shall now describe the details of construction ofour improved means for continuously removing the finished paper pulp embodies several improvements over the similar apparatusdescribed and claimed in our Patent #1,31 0,628 of July 22, 1919. This apparatus comprises a drum having the two heads or end members 40 and 41 respectively, which are polygonal in form and preferably made from cast iron. The head or end member'40 isrigidly secured by a key 42, or. in any other suitable manner, to the shaft 43. which is rotatably mounted in the bearing blocks 44 and 45, which will be referred to in detail later, on. The head 41 coact with the upper-edges of-the steel bars 30 to grind the paper stock or partially formed pulp between the edges of the blades and the bars. The roll 25 may therefore be designated as a grinder roll. We referably form the bars 30 of harder metal than the metal fromwhich the blades 27 are formed, thereby causing continuous abradin action between the bars 30 and the blades 2 which keeps the blades in a sharpened coildition,

made narrower than the bars 30 so that the removes thepulp which has been ground to- K a proper degree of fineness, but irejects the passes under 'the breaker roll along with the located intermediate the breaker and beater from the beatingengine. This construction is secured to the flange 41 f the discharge spout 41 by means of bolts 41. The dis v charge spout 41' is keyed to the shaft 43 b means of a key 42. Surrounding the ait/43,, and concentric therewith, is Fa conical discharge drum or member 46, the

. small end of which is keyed to the shaft 43 by a key '47, the larger end of which is supported by an inwardly extending, annular flange 48 formed on the inside of the head 40. I

The periphery of the drum is formed of a plurality of sections 49 of metal pipe, these pipes being so secured inthe endmembers as to follow the edges of the heads and thus produce a drum or cylinder having a polygon'al periphery. Forthe purpose of expediting the securing of the pipe sections 49 to,

and removing them from the drum, we pro--' vide the head 41 with a plurality of openings extending therethrough, through which the pipes can be inserted. The ends of the pipe sections 49 remote from the head 41 are received in suitably formed bores which extend only part way-through the head '40. For holding the pipe sections in place, we

7 provide a series of plates 50 which we hold Figure 3, whichpick up the pulp entering in placeby means of screws'or bolts 51 (see Figure'2).

A plurality of partitions, 52 extend outward y the ends of 'these partitions being received in channel-shaped members 53, secured to the outer periphery of the deflector 46.

Plates 54 are arranged to extend at an angle to the,partit ons 52, and each of these. plates I has one edge contacting with the outer edge of the partitions 52, so that together, the partitions 52 and the plates 54 constitute scoops.

opening in the direction of rotation of the drum, as is indicated bythe large arrow in the drum between the pipe sections. "As the drum rotates so as to bring first the plates 54 and then the partitions 52 into positions inclined downwardly, the pulp picked up by the scoops slides down, upon the deflector .46 and thence-through the openings 55 benular discharge spout 41f.

tween the spikes 56 which support the an- It sometimes happens that the pulp sticks to the parti- .tions and does not discharge through the dis- I charge openingsat the time when it should normally." .To insure the discharge of this pulp, we cut away the ends of the alternate partitions 52 as shown at 52', Figure 4, so that as" the partitions rotate past the vertical position; the pulp can drop through this opening and thus discharge throug i the outlet. The pulp thus discharged drops'th'rough the downtake 57, through the opening 58 I (see Figure 1) ,in the floor, and into the vat 59 (see Figure '2). The upper end of the downtake 57-is provided with ahead having an'annular flange 60 that' s urrounds the-disfrom the conical-shaped deflector 46, I

charge spout 41" so'that the downtake will move up and down with the drum as the latter is raised and lowered by means about to be described. In the position shown in igure 4, the discharge spout 41. rests in acircular depression in the upper edge of the side wall of the tank, and for preventing the pulp and water flowing outwardly' through this depression when the drum is flange 61 to the discharge spout which moves raised, we secure an. outwardly extending up and down therewith. The heads 40 and 41 are held together against the ends of the partitions 52 and the plates 54 by means oft-he tie rods 62. It will be noted that the inner sides of the heads are provided witha plurality of properly ,arrange(l ribs 63 having grooves'64 formed therein for receiving the ends of the partitions 52 and plates 54. In some places the ribs and grooves are duplicated toextend in opposite directionsfroin those which are shown in Figure 3 as being occupied by the ends of the partitions or plates. This is for the purpose 'of re-ar'rangi'ng the-par or end members, so as to be able to form a drum whichwill remove pulp from the beat 'ing engine while-rotating in the opposite direction. F If desired, the joints between the partitions and platesfcan be reinforced and sealed by means of anglestrips 65. We prefer to form the partitions 52 and the plates 54 of sheet metal, butour invention is not of course, to be limited to the use of "this materialfor'this purpose.

We shall now discuss the. means by which we drive the pulp remover from the engine. This means comprises agear 68 which is keyed o'r otherwise secured to the shaftv 4 3,. and which is driven by means of the pincal screw-threaded bores extending. there- 20 through for receiving the vertically extending screws 7 7 The extens ons 76 are held in place in the U-shaped guides 75 by means of the removable plates or strips 78, the Inner opposededges of which are received by slots formed inthe sides of the neck" 79 of the ex tension, The upper .endsof the guides 75 are provided with hearing blocks 80 for the upper ends of the screws 77. The upper 7 ends of the screws 77 have secured thereto, theworm wheels 81 which are engaged by titions and plates relatively to the heads ly, the teeth of the gear 69 gradually move eratedto produce pulp at less than its maxlout ofcontact with thepinion 68 until a point is reached where the pinion 69 is no longer in driving relation with the gear. If-

the beating engine is in operation, the pulp removing drum will not cease to rotate by reason of this disengagement between the pinion 69 and the gear 68, but will continue to rotate due to the impact of the water and pulp flowing in' the tank against the flat sides of the drum. Therewill, therefore, be

no interruption in the discharge of pulp from the beating engine. This is of particular advantage when the engine is being opmum capacity. We wish to state here that there is a distinct advantage in using a drum having polygonal shaped sides, as we have found that as the flat sides enter the pulp andwater, they create an impact or disturbance which has the effect of forcing all finished pulp through the pipe sections or bars forming the periphery of the drum,

and this increases the rate at which the pulp is discharged from the engine, thereby, to

I between the pipe sections 49 and for remov-v the-engine. For the purpose of clearing the spaces a certain extent, increasing the capacity of ingany strings or rags which may become I lodged upon these) pipe sections or bars, we

. the periphery ofthe drum. The pipe can -be'coiinected bya'pipe 92 with any suitable provide a pipe 90, which extends longitudinally ofl'the drum and is provided with a a plurality, of.jet openings 91, through which water can-be forcedin theform of jets on'to supply of water under pressure. Preferably this water shouldbe heated. 'It will, however, be understood that other fluids besides Waterman, ifdesired, be used for this purpose.

Difii'culty has heretofore been experienced in causing the paper stock to be properly directed beneath the breaker roll. We have discovered that this can be easily .accomplished by directing jets of water from a' pipe 94 onto the paper stock j-ust'before it comes into contact with the breaker roll. These jets of water should preferably be heated to-cause a preliminary softening of l the ' brea er roll.

paper. stock, before it encounters the The reference characters 95 denote cover. plates for openings 96 in the bottom of the beating engine, through which the tank can be drained whenever desired. These openings may if desired, be used for removing thepaper. pulp from the engine in place of the continuous removing devices C and,C',

- but when the pulp is thus removed, the beating engine must necessarily operate on the intermittent principle.

. While we have described the details of construction of the preferred embodiment of our invention, it should be clearly understood that our invention is not to be limited to these details, but is capable of other adaptations and modifications within the scope of the appended claims.

We particularly desire to point out that although we have shown but two beater rolls arranged in series, it is poss ble and' in some cases desirable, to use a greater number of beater rolls. 'When a greater number of beater; rolls are employed, they will be so adjusted relatively to their bed plates that the reduction of the paper stock to paper pulp will be accomplished gradually in passingf'rom the first or breaker roll to the last or grinder roll-that is, each beater roll progressing from the breaker roll to the grinder roll, will be adjusted slightly closer to its bed plate than the preceding roll.

Furthermore, where more than two beater rolls are employed, we prefer to correspondingly increase the number of devices for removing the pulp from the beating engine so thateach beater'roll will be p pulp removing apparatus, there y msurlng recededby thateach roll will operate at its maximum efliciency. p v

Having thus described our invention,

what we claim is: I

1. The combination with abeating engine comprising a tank through which the water and stock flows, of a plurality of beatef'rolls arranged in'series in said tank, bed plates for said beaterv rolls, one of said rolls being a breaker roll. and the other of said rolls being a grinder roll, and means for continuously removing formed pulp from said tank before it reaches said grinder roll. 3

' 2. The-combinatiorr with a beating engine comprising 'a tank through which the water and stock flows, of; a plurality ofbeater rolls arranged in series in said tank, bed plates for said beater rolls, one of said rolls-being a breaker roll and the other of said rolls being a grinder roll, and means for removing formed pulp from said tank before it I reaches said grinder roll. 7

3. The combination with a beating engine comprising a tank through which the water and stock flows, of a plurality of beater rolls arranged in series. in said tank. bed platesfor saidheater rolls, oneof said rolls being f a breaker roll and the other of said rolls beentry of the formed pulp into said cylinder,

means in said cylinder for picking up the pulp and discharging it through one end of said cylinder comprising a plurality of radially extending partitions, some of which 7 are cut away adjacent the discharge end of said cylinder to expedite-the discharge of pulp, and a water between said bars.

5. Means for removing formed pulp from a beating engine, comprisinga rotatably mounted cylinder polygonal in cross se'ction, the sides of which are formed of longitudinally extendingbars spaced apart to permit entry of the formed pulp into said cylinder, means in said cylinder for picking up the pulp and discharging it through one end of said cylinder, and a water jet for clearing the spaces between said bars.

6. Means for removing formed pulp from a beating engine comprising a drum having intake openings through the side thereof and a discharge opening at one end, and means for rotatably supporting said drum comprising a bearing block at each end thereof, a vertical guide for each bearing block, a screw extending vertically of each guide and having thread connections with the corresponding bearing block, and common means for rotating each of said screws. 7. In a device for removing formed pulp from a beating engine, a rotating drum comjet for clearing the spaces prising polygonal heads, a plurality of longitudinal bars secured along the periphery of said heads, said bars projecting into recesses into one of said heads and passing through the other head, means for holding said bars in position, and means in said drum for picking up and deflecting the pulp to an opening in one head of the drum. s

8. In a machine of the class described, rotatable means for removing pulp from its supportmg liquid, said means comprising a pair of heads, one of saidheads having recesses and the other holes spaced around the periphery; plates separating said heads,

stay bolts extending through said heads,

bars insertible through holes in the one head and fitting into the recesses in the other and means for preventing longitudinal movement of said bars,

9. In a beating engine, means for removing pulp .from said engine, comprising a: rotatable drum, radial partitions fixed therein, some of said partitions being cut away near the discharge end of the drum.

10. In a beating engine, means for removmg formed pulp from said engine comprising rotatable rolls, heads in said roll aid heads having grooves adapted to receive radial partition plates, and having two additlOl'iil-LSGtS of grooves to receive plates, one of said sets of grooves extending outwardly and forwardly and the other set outwardly and rearwardly from the outer end of said partition plate grooves.

In witness whereof, we hereunto sub'-' scribe our names this 7th day of September, 1920.

JAMES T. MURPHY. EDWARD J. RANEY.

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